Recess-plane



(No Model.)

H. L. TUPPER.

RECESS PLANE.

No. 272,801. Patented Peb.20,1883.

J lllllIlll A ATENT Orrrcn.

HARVEY L. TUPPER, OF ROCKFORD, ILLINOIS.

RECESS- PLANE.

SPECIFICATION forming part of Letters Patent No. 272,801, dated February20, 1883.

Application filed November 6, 1882. (No model.)

To all whom it may concern:

Be it known that I, HARVEY L. TUPPER, a citizen of the United States,residing in the city of Rockford, in the county of Winnebago and Stateof Illinois, have invented a new and useful Recess-Plane, of which thefollowing is a specification.

Thisinvention relates to word-working tools; and its object is toproduce a tool of plane form capable of use for leveling the bottom ofthe mortises, or of recessed or sunken surfaces in wood-work; and itconsists of a suitable hand-tool in plane form, and in this instancehaving its stock portion produced in openwork, provided with acutting-tool made vertically adjustable, and having its lower endcutting portion bent at a suitable angle to the vertical shank thereof,all of which, with other features, will be hereinafter more fullydescribed.

In the accompanying drawings, Figure 1 is a front isometricalrepresentation of a recessplane embodying my invention. Fig. 2 is arearisometrical representation of my improved recess-plane. Fig. 3 is acentral transverse vertical section, and Fig. 4 is an isometricalrepresentation of the cutter.

In the figures, A represents the stock portion of my improvedrecess-plane, which in this instance is produced of cast-iron,preferably in open-work form, having a front central opening, a, toreceive the cutter and to permit the cuttings to rise through the stockfreely. The under face of this stock is produced in even plane form byplaning, grinding, or by any of the usual methods of producing planesurfaces in metals, and its open-work form permits the operator toreadily see its position on the work, and also gives greater strengthwith less material.

At B is represented a cutting-tool-supporting arm, which rises in avertical position centrally from the upper face of the plane-stock insuch position thereon that its front side will be in the same verticalplane with the rear edge of'the central front opening, a. The front sideof this tool-support is grooved to receive the shank of the tool, havingits edge portion 1) project in front of its central portion to embracethe edge portion of the tool-shank. The outer edge portions, b, of thistool-Support are of wedge form, having a greater depth [at their basethan at their upper ends, as

clearly represented in the drawings.

At 0 is represented a cutting-tool produced from suitable bar or platematerial, having its shank portion 0 of proper width to enter thegrooved face of the tool-support between the projecting edges 1)thereof, in a manner to be capable of a vertical adjustment therein. Thelower portion, d, of this cutting-tool is of a proper width for thepurpose for which it is designed, but may be of any width within thecapacity of a plane to adapt it to the use or purpose required.

The extreme lower end, 0, of these cutters are bent at such an anglerelatively with the shank thereof that when fitted with a cuttingedgeand placed in the plane its lower face will be slightly inclined to theface ofthe plane in such a manner as to produce a proper cuttin g-leadrelatively therewith.

At D is represented a tool-holder having its inner face slightly curvedin the direction of its length in such a manner that its ends willengage the front face of the vertical shank of the cutting-tool.

At h are represented hook-arms springing from the sides of the centralportion ofthe tool-holder D in such a manner as to embrace thewedge-formed edge portions b of the toolsupport B in such a. manner thatwhen the holder is forced or driven downward,the hookarms descending,the wedge-formed portions 1) of the tool-support will operate to clampthe cutter to the support in a manner to hold it firmly. The upper endof this tool-holder is provided on its front face with a projection, 70,

by means of which, with the use of a hammer,

the holder may be disengaged from the support for the purpose ofremoving, applying, or adjusting the cutters.

At E are represented knob-formed handles fixed to the end portions ofthe plane-stock rising from its upper face in position'and of propersize to enable an operator to use the plane and manage and control itsmovements.

In the use of my improved recess-plane a cutting-tool of the properwidth is selected and placed in the plane, adjusted to the proper depth,and fixed in position by means of the holder. The operator then takeshold of the plane by the knob-handle and places it in position on thework, and forces it in the proper direction to cause the cutter toremove the surplus wood and reduce the recessed portion to a uniformdepth having a plane surface.

By means of my improved recess-plane; depressions, and recessed orsunken surfaces of all varieties within the capacity of the plane, mayreadily be reduced to an even surface of uniform depth.

In the foregoing I have described my improved recess-plane stock asbeing" provided with a Vertical cutter-support grooved to receive acutting-tool, which construction I preier; but it is evident that thecutter-support may be inclined and still be within the scope of myinvention.

I claim as my-invention-- 1. In a recess-plane, the tool-supporting armhaving its edges produced in wedge form, and provided with the groove onits inner face to receive the cutting-tool, in combination with thetool-holder'adapted to engage the wedgeformed portions of thesupporting-arm in such manner as to clamp and hold the cutting-toolbetween the adjacent faces of said arm and holder, substantially asdescribed.

2. The combination, with the supporting'arm having its edges produced inwedge form, and provided with the groove on its inner face to receivethe cutting-tool, of the cutting-tool and a tool-holder adapted toengage the wedgeformed portions of the supporting-arm in such manner asto clamp and hold the cutting-tool between the adjacent faces of saidarm and holder. substantially as described.

HARVEY L. TUPPER.

Witnesses:

JACOB BEHEL, A. U. BEHEL.

